For readers of the 2020 hardcover editions of my book Nose Dive: A Field Guide to the World's Smells:
I'm happy to offer here a new version of the index, which I completely revamped for the 2022 Penguin Books paperback and ebook. Of course please buy the paperback or ebook if you'd prefer to have text and index together. But you can keep a printout of this pdf tucked in the back of the hardcover, or keep it on your tablet or phone for quick searching. Or both.
I redid the index to make it more complete and intuitive. Rather than the sub-headings in each entry being organized alphabetically, they begin with the the definition of an idea or molecule or material, and then track its appearances chapter by chapter as the world tour proceeds.
My thanks to Marion Nestle for constructive criticism of the original index and her kind followup!